What is clamscan.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the clamscan.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Clamscan.exe file information

The process known as ClamWin Antivirus or ClamScanUnpacker belongs to software ClamWin Free Antivirus or Advanced System Protector or WinZip Malware Protector by Systweak (

Description: Clamscan.exe is not essential for the Windows OS and causes relatively few problems. The clamscan.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 126,976 bytes (14% of all occurrences), 86,016 bytes and 5 more variants. 
There is no information about the author of the file. The program has no visible window. Clamscan.exe is not a Windows system file. Clamscan.exe is able to manipulate other programs. Therefore the technical security rating is 29% dangerous, however you should also read the user reviews.

Uninstalling this variant: If problems with clamscan.exe occur, you can also do the following:

Recommended: Identify clamscan.exe related errors

Important: Some malware camouflages itself as clamscan.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the clamscan.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

The actual process that does the anti-virus scanning
Antivirus scanner
  GAVIAO999   (further information)
Part of the Clam Sentinel for ClamWin. It's the part that scans file changes to the computer. Isn't dangerous. Just a bit processor intensive.
  Anonymous   (further information)
unverschämter Spion

Rating chart

Summary: Average user rating of clamscan.exe: based on 6 votes with 4 user comments. 3 users think clamscan.exe is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks clamscan.exe is dangerous and recommends removing it.

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Best practices for resolving clamscan issues

A clean and tidy computer is the key requirement for avoiding problems with clamscan. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the clamscan.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

clamscan.exe [all]